The Red Line and Blue Line

Massachusetts Bay Transportation Authority 1450 & 1455, and 0622 & 0623 (Boston) at Seashore Trolley Museum

#1450 & #1455 on the left is from Boston's Red Line and are the largest cars of the Boston Subway System. #0622 & #0623 on the right are from Boston's Blue Line and are the smallest cars on that system. Boston's Orange line cars are intermediate in size.